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kotegsom [21]
3 years ago
9

A moving sidewalk in an airport terminal moves at 1 m/s and is 35 m long. If a person steps on at one end of the sidewalk and wa

lks at 1.5 m/s relative to the moving sidewalk, how much time does it take the person to reach the other end of the sidewalk if a) the person walks in the same direction the sidewalk is moving b) the person walks in the opposite direction the sidewalk is moving?
Physics
1 answer:
Serhud [2]3 years ago
4 0

Answer:

a) (1.4 + 1.9) = 3.3m/sec.

(35/3.3) = 10.6 secs.

b) (1.9 - 1.4) = 0.5m/sec.

(35/0.5) = 70 secs.

Explanation:

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aleksandrvk [35]

Answer:

changing from a solid to a gas without changing into a liquid. :)

6 0
2 years ago
How would doubling the mass of Earth affect the gravity we experience?​
N76 [4]
The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled. increases, the force of gravity decreases.
5 0
3 years ago
The centripetal force acting on the space shuttle
tamaranim1 [39]

Answer:

(4) weight

Explanation:

The centripetal force acting on the space shuttle in orbit is given by:

F=m\frac{v^2}{r}

where

m is the mass of the shuttle

v is the tangential speed of the shuttle

r is the radius of its circular orbit

When the shuttle orbits the Earth, the centripetal force that keeps the shuttle in circular motion is given by the gravitational attraction between the shuttle and the Earth, which corresponds to the weight of the shuttle, and it is given by:

F=G\frac{Mm}{r^2}

where

G is the gravitational constant

M is the Earth's mass

And this force, therefore, corresponds to the centripetal force.

7 0
3 years ago
Read 2 more answers
A psychologist is interested in exploring the effect tutorial support on students academic performance and assign students in to
NikAS [45]

Answer:

The dependent variable is academic performance

The independent variable is the presence/absence of tutorial support

The control group are students who did not get the tutorial support.

The experimental group were students that got the tutorial support

Explanation:

In every experiment, there is a dependent and independent variable as well as an experimental and a control group.

The experimental group receive the treatment while the control group do not receive the treatment. The independent variable is manipulated and its impact on the dependent variable is evaluated.

The control group are students who did not receive the tutorial support while the experimental group are students that received the tutorial support.

The dependent variable in this case is academic performance. Its outcome depends on the presence or absence of tutorial support (independent variable).

5 0
3 years ago
Aliens? do you believe?<br><br>To get the points go into detail :)
zzz [600]

Answer:

Yes

Explanation:

There are so many planets out there that there must be habitable planets if not in our galaxy but the Universe.

Although the chances of advanced life are slim, small primitive life like microbes or sea life may still exist.

7 0
3 years ago
Read 2 more answers
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